335 research outputs found

    Visionmaker.NYC: An Online Landscape Ecology Tool to Support Social-Ecological System Visioning and Planning

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    The Welikeia project and the corresponding free online tool Visionmaker.NYC focus on the historical landscape ecologies of New York City. This article provides a brief introduction to online participatory tools, describes the Visionmaker tool in detail, and offers suggested ways to use the tool for Extension professionals based in and outside New York City. This information provides a basis for best practices Extension professionals can apply when using Visionmaker to support ecological thinking and participatory planning to catalyze change among urban residents

    Chronology of Range Expansion of the Coyote, Canis latrans, in New York

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    Coyotes (Canis latrans) were historically restricted to central North America. In less than two centuries, however, Coyotes have colonized most of the continent, including much of northeastern North America. Better understanding causes and proximate mechanisms of this expansion requires a detailed understanding of how Coyotes colonized areas on a fine scale. We examined the establishment of Coyotes in the State of New York by collecting and analyzing reports of their first occurrence throughout the state over the past century, and creating a detailed map of range expansion. Coyotes first entered New York from the north, circled the Adirondack region prior to colonizing it, and then expanded southward and westward at ca. 78-90 km/decade. The revealed pattern lends little support to the hypotheses that the range expansion is attributable to translocations and releases, or that Coyotes were historically present in the region and only recently expanded in numbers. Rather, the data suggest a correlative relationship between anthropogenic land use and Coyote range expansion

    Meeting Report: National Workshops for the Communication of Air Pollution and Health Information: Summary of Four Workshops in Different Regions of Europe

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    AIRNET was a thematic network project (2002–2004) initiated to stimulate the interaction between researchers in air pollution and health in Europe. As part of AIRNET’s communication strategy, a standardized workshop model was developed to organize national meetings on air pollution and health (AIRNET network days). Emphasis was given to tailor the national workshop information and related activities to the specific needs of a wider range of stakeholders (e.g., policy makers, nongovernmental organizations, industry representatives). In this report we present an overview of the results of four workshops held in western, northern, central/eastern, and southern regions of Europe in 2004. Overall, workshop experiences indicated that by actively involving participants in the planning of each meeting, AIRNET helped create an event that addressed participants’ needs and interests. A wide range of communication formats used to discuss air pollution and health also helped stimulate active interaction among participants. Overall, the national workshops held by AIRNET offered a way to improve communication among the different stakeholders. Because a broad stakeholder involvement in decision making can positively affect the development of widely supported policies, such meetings should be continued for Europe and elsewhere

    Groundwater declines are linked to changes in Great Plains stream fish assemblages

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    Groundwater pumping for agriculture is a major driver causing declines of global freshwater ecosystems, yet the ecological consequences for stream fish assemblages are rarely quantified. We combined retrospective (1950–2010) and prospective (2011–2060) modeling approaches within a multiscale framework to predict change in Great Plains stream fish assemblages associated with groundwater pumping from the United States High Plains Aquifer. We modeled the relationship between the length of stream receiving water from the High Plains Aquifer and the occurrence of fishes characteristic of small and large streams in the western Great Plains at a regional scale and for six subwatersheds nested within the region. Water development at the regional scale was associated with construction of 154 barriers that fragment stream habitats, increased depth to groundwater and loss of 558 km of stream, and transformation of fish assemblage structure from dominance by large-stream to small-stream fishes. Scaling down to subwatersheds revealed consistent transformations in fish assemblage structure among western subwatersheds with increasing depths to groundwater. Although transformations occurred in the absence of barriers, barriers along mainstem rivers isolate depauperate western fish assemblages from relatively intact eastern fish assemblages. Projections to 2060 indicate loss of an additional 286 km of stream across the region, as well as continued replacement of largestream fishes by small-stream fishes where groundwater pumping has increased depth to groundwater. Our work illustrates the shrinking of streams and homogenization of Great Plains stream fish assemblages related to groundwater pumping, and we predict similar transformations worldwide where local and regional aquifer depletions occur

    A Case-Control Study of Trace-Element Status and Lung Cancer in Appalachian Kentucky

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    Appalachian Kentucky (App KY) leads the nation in lung cancer incidence and mortality. Trace elements, such as As, have been associated with lung cancers in other regions of the country and we hypothesized that a population-based study would reveal higher trace element concentrations in App KY individuals with cancer compared to controls. Using toenail and drinking water trace element concentrations, this study investigated a possible association between lung cancer incidence and trace-element exposure in residents of this region. This population-based case-control study had 520 subjects, and 367 subjects provided toenail samples. Additionally, we explored the relationship between toenail and fingernail trace-element concentrations to determine if fingernails could be used as a surrogate for toenails when patients are unable to provide toenail samples. We found that, contrary to our initial hypothesis, trace element concentrations (Al, As, Cr, Mn, Co, Fe, Ni, Cu, Se, and Pb) were not higher in cancer cases than controls with the exception of Zn where concentrations were slightly higher in cases. In fact, univariate logistic regression models showed that individuals with lower concentrations of several elements (Al, Mn, Cr, and Se) were more likely to have lung cancer, although only Mn was significant in multivariate models which controlled for confounding factors. While drinking water concentrations of Al, Cr and Co were positively related to cancer incidence in univariate models, only Co remained significant in multivariate models. However, since the drinking water concentrations were extremely low and not reflected in the toenail concentrations, the significance of this finding is unclear. We also found that fingernail concentrations were not consistently predictive of toenail concentrations, indicating that fingernails should not be used as surrogates for toenails in future studies

    The Changing Face of Water: A Dynamic Reflection of Antibiotic Resistance Across Landscapes

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    Little is known about the role of surface water in the propagation of antibiotic resistance (AR), or the relationship between AR and water quality declines. While healthcare and agricultural sectors are considered the main contributors to AR dissemination, few studies have been conducted in their absence. Using linear models and Bayesian kriging, we evaluate AR among Escherichia coli water isolates collected bimonthly from the Chobe River in Northern Botswana (n = 1997, n = 414 water samples; July 2011–May 2012) in relation to water quality dynamics (E. coli, fecal coliform, and total suspended solids), land use, season, and AR in wildlife and humans within this system. No commercial agricultural or large medical facilities exist within this region. Here, we identify widespread AR in surface water, with land use and season significant predicators of AR levels. Mean AR was significantly higher in the wet season than the dry season (p = 0.003), and highest in the urban landscape (2.15, SD = 0.098) than the protected landscape (1.39, SD = 0.051). In-water E. coli concentrations were significantly positively associated with mean AR in the wet season (p < 0.001) but not in the dry season (p = 0.110), with TSS negatively associated with mean AR across seasons (p = 0.016 and p = 0.029), identifying temporal and spatial relationships between water quality variables and AR. Importantly, when human, water, and wildlife isolates were examined, similar AR profiles were identified (p < 0.001). Our results suggest that direct human inputs are sufficient for extensive dispersal of AR into the environment, with landscape features, season, and water quality variables influencing AR dynamics. Focused and expensive efforts to minimize pollution from agricultural sources, while important, may only provide incremental benefits to the management of AR across complex landscapes. Controlling direct human AR inputs into the environment remains a critical and pressing challenge

    Rethinking Sudan Studies: A Post-2011 Manifesto

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    Abstract This essay appraises “Sudan Studies” following the 2011 secession of South Sudan. It asks two questions. First, what has Sudan Studies been as a colonial and postcolonial field of academic inquiry and how should or must it change? Second, should we continue to write about a single arena of Sudan Studies now that Sudan has split apart? The authors advance a “manifesto” for Sudan Studies by urging scholars to map out more intellectual terrain by attending to non-elite actors and women; grass-roots and local history; the environment and the arts; oral sources; and interdisciplinary studies of culture, politics, and society. They propose that scholars can transcend the changing boundaries of the nation-state, and recognize connections forged through past and present migrations and contacts, by studying the Sudan as a zone rather than a fixed country. Finally, in their introduction to this bilingual special issue, they highlight the increasing relevance of French scholarship to the endeavor of rethinking Sudan Studies. Résumé Cet essai évalue la situation des « études soudanaises » après la sécession du Soudan du Sud. Il pose deux questions. La première : En quoi ont consisté les études soudanaises en tant que domaine colonial et postcolonial de recherche universitaire et dans quelle mesure doivent-elles changer, si tant est qu\u27elles doivent changer ? La seconde : Devrions-nous continuer à baser nos écrits sur un domaine unique d\u27études soudanaises maintenant que le Soudan est divisé ? Les auteurs proposent un « manifeste » pour les études soudanaises en exhortant les experts à cartographier un terrain intellectuel élargi en s\u27intéressant aux acteurs ne faisant pas partie des élites et des femmes ; à l\u27histoire de la base populaire et locale ; à l\u27environnement et à l\u27art ; aux sources orales ; et aux études interdisciplinaires portant sur la culture, la politique et la société. Ils avancent que les chercheurs peuvent aller au-delà des frontières en mutation de l\u27État-nation et reconnaitre les connexions établies grâce aux migrations et aux contacts passés et présents en étudiant le Soudan comme zone plutôt que comme un pays fixe. Enfin, dans leur introduction à ce numéro bilingue spécial, ils mettent en relief la pertinence croissance des travaux universitaires français dans le cadre de l\u27initiative visant à repenser les études soudanaises

    Method for Quantitative Study of Airway Functional Microanatomy Using Micro-Optical Coherence Tomography

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    We demonstrate the use of a high resolution form of optical coherence tomography, termed micro-OCT (μOCT), for investigating the functional microanatomy of airway epithelia. μOCT captures several key parameters governing the function of the airway surface (airway surface liquid depth, periciliary liquid depth, ciliary function including beat frequency, and mucociliary transport rate) from the same series of images and without exogenous particles or labels, enabling non-invasive study of dynamic phenomena. Additionally, the high resolution of μOCT reveals distinguishable phases of the ciliary stroke pattern and glandular extrusion. Images and functional measurements from primary human bronchial epithelial cell cultures and excised tissue are presented and compared with measurements using existing gold standard methods. Active secretion from mucus glands in tissue, a key parameter of epithelial function, was also observed and quantified
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